table {
  border-spacing: 0;
  border-collapse: collapse;
}

.table {
  width: 50%;
  max-width: 50%;
  margin-bottom: 20px;
}
tr {
  height: 40px;
}
td {
  width: 100px;
  height: 40px;
  text-align: center;
}

.btnGroup {
  margin-top: 5px;
}

td.selected {
  box-shadow: 0 0 10px #004b92;
}

pre {
  border: 1px solid black; 
}
.selectedCell pre {
  height: 220px;
}